<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
/*

    alert("要跳转了");
    location.href = "https://www.baidu.com";

*/


    //3秒跳转到首页

    document.write("3秒跳转到首页...");
    setTimeout(function (){
        location.href = "https://www.baidu.com"
    },3000);

</script>
</body>
</html>